After I studied mathematics and computing in Darmstadt, I met Arnold Keyserling in Geneva where I had invited him as a speaker at European Conferences on Humanistic Psychology that I organised. Thus he became the first President of the European Association of Humanistic Psychology and I was the Secretary.

It is remarkable: Chinese polarities bridge opposites just as many humanistic therapies.

This diagram highlights the symmetry inherent in ‘numerically mirroring’ pairs of hexagrams which contain 0:

e.g. 07 and 70 [yellow]

or 01 and 10 [grey]

or 03 and 30 [green].

This gallery shows the four possibilities of ordering the trigrams so that hexagrams appear in different positions, thus indicating different transitions of change from one hexagram to another. Here they all start with Heaven / The Creative (1 octal 77) and end with The Joyous (58 octal 33). Numerically speaking, they are ‘descending’ from 77 to 33.

These four diagrams have in common that the hexagrams are ‘ascending’ from 33 to 77: